Press.



W; KLOOKE.

PRESS.

APPLIOATION FILED MAR. 31, 1908.

930,602. Patented Aug. 10,1909.

4 SHEETS-SHEET 1.

INVENTOR WITNESSES:

W. KLOGKE.

PRESS.

APPLICATION FILED MAR. 31, 190B.

Patented Aug. 10, 1909.

4 SHEETS-SHEET 2 FIG. 8.

FIG. 2,

WITNESSES:

W fix/(4% W. KLOGKE.

PRESS. APPLICATION FILED MAR.31, 190a.

Patented Aug. 10, 1909.

- 4SHEETS-SHEET 4.

INVENTOR WITNESSES: m

I ma nears snare m ner Ohm on.

WILLIAM KLOGKE, OF NEWYORK, N. Y., ASSIGNOR TO E. W. BLIss COMPANY, OF BROOKLYN,

' NEW YORK, A CORPORATION OF WEST VIRGINIA. w

I PRESQ.

Specification of Letters Patent.

Patented Aug. 10, 1909.

' Application filed March a1, 1908. Serial No. mine.

To all whom it may concern:

Be it known that I, WILLIAM KLOCK'E, a citizen of the United States, residing in the borough of Brookl 11, county of Kings, city and State of New ork, have invented cer-, tain new and useful Improvements in Presses, of which the following is a specification.

This invention aims to provide certain improvements in presses, and which are especially applicable to drawing presses which first cut and then in two successive steps draw-a sheet of metal to a desired tubular form. p

The accompanying rawings illustrate an embodlmentof the-1n ention. m a

Figure 1 is a face elevation of ajpress embodymg the invention. Figs. '2, 3 and 4 are side elevations ofcertain'transmitting mechanism in successive ositions. Fig. 5 1s a central section throng the cutting and punching tools. Fig. 6 1s' a diagram of'the successive positions of the several tools or movable parts of the'machine.

Referring to the embodiment'of the i'nven tion illustrated, the broken and dotted line A, Fi 5,. indicates the original sheet, the dotte line B the position of the sheet after the cutting and the first punchin operations, and C the final shape of the worli. Inoperation the sheet A'is first laid upon the lower (in this case the movable) cutter D which constitutes also the first drawing die an'd'is moved upward until the cutting is effected by means of the upper or fixed die'E which is supported from a cross-brace F of the main frame ofthe machine. The cut-out ortion of the sheet-metal is held-between t e cute.

ting dies D and E until e'ngaged by the descending unches, respectively an outer hollow unc Gand an'inner'punch H', theformer sing the first punch and the latter the second. These two punchesthe firstmovement'su stantia .or'nearly andK, Fig. 6, correspondin to: the movements of-the punches G and 6 respectively.-

The descending punches thus draw the metal down to the ositionshownat B. .The outer E G comestoa stop in a positionto :press the metal down upon the second drawing die 'L, and the second punch-con- 1 tinue's its movement to draw the metal down to; the position 0. Thereafter the -,pufiches I pass through the hollow "die E, both unches' "artaking of are raised clear of the-work and the movable bed M supporting1 the cutting and drawing dies is lowered, t e knock-out N remaining stationary or being lifted as far asv is necessary to hold the finished work clear and to permit its ready removal from the machine. The lifting and lowering of the movable bed M is effected by. means of links 0, Fig. 1, connected to crank arms'on a shaft P, as is common in other machines of this type, and the knock-out may be controlled in any of the various known ways or in any other suitable way.

The machine is driven from 1 a shaft Q which drives a car R, which by means of a one-revolution c utch controlled from a pedal S is connected to the main shaft T of the machine so as to give this one complete rotation, and is then automatically disconnected until the work is removed and a new sheet placed in the machine, whereupon the operator again presses the pedal Thethree principal movements of the machine,the movement of the cutter and blank holders, the first punching movement, and the'secand punching movement., -are all obtained from. the main shaft T. 1 For this ]purpose the outer punch G is carried upon a ollow slide U "guided in ways V carried by the side frames W of the machine, the slideU bein adjustably connected by means of screws with a cross-head Y which in turn: is -ad-,

and engage the cross-heads and Z to raise and lower the outer unch.

The inner punch is guided in the outer punch, being carriedupon a rod the upper end of Whic constitutesa slide '0 which is connected adjustably by means; of a mad to.

a link c the 11 per end of which is carried by crankslf on it e. -sha ft,T.. I v The angular tion of the cams b and cranks f re a positive y. to each other is-indicatedinFigs. 2, 3 and 4,

and results in the-operation of -the two punches accordin V I prev ously referre to.

to the curves J andK main-shaft T*to the lower shaft P whichac tuatex's the movable bed, I have devised a- H Eortransmlttmg the movement i'rom the second pin t' which is connected to the up er end of a link it the lower end of which is astobegin its punching operation.

long movement of themovable part may be 7 position of Fig. 3 the pin t has a minimum speed efficiency, and the same is approximechanism for securing a very uick initial movement until the lower bed is rought up nearly to the cutting and clamping position,

and a very slow and powerful movement thereafter; and this transmittin mechanism is applicable whether the mem er moved be'a cutting and clam ing die as in the present case, or whether 1t be some other movable member of the press. This mechanism includes preferably a toggle, a crank arm' which is actuated by said toggle at a diminishing speed, and a second crank arm linked to the first and actuated thereby at a diminishing speed. Preferably also the toggle 1s substantially straight at the end of an actuating movement, and the link between the two crank arms extends approximately across the axis of the first arm. This mechanism results in a movement of the bed which is indicated by the curve -g (Fi 6) The starting position of the mac ine is shown in Fig. 2, the position after the shaft has been rotated 108 degrees in Fig. 3,' and after the shaft has been rotated 180 degrees in Fig. .4. Fig. 3 represents'the point at which'the movable bed has risen to the limit of its upward movement. The shaft T is provided with a crank pin it connected to the upper end of a link Zthe lower end of which is provided with a pair of pins m n whose centers are-in a line transverse to the length of the link. The pin m connects the operating link Z with a toggle link 0 fastened at its 0 po site end to a fixed point upon plate fastened upon the side frame of the machine. The pin n connects the operating linkwitha second ,toggle link p the opposite end of Which is connected by a pin q with an arm 1 upon a shaft 8 fixed to the plate W. The arm 1' is in-effect a double arm carryinga tened by a pin '0 tolan arm' w on the bed-operatin shaft P reviously referred to. As shown. by ig..3, the crank pin it on the main shaft T moves through an arc of 108 de-. grees in order to brin thelink/q, in line with I. the shaft s, this beingt eposition inwhich the bed-o eratin shaft 1 is farthest advanced and t e bed lifted to its clamping position, the cam-operated outer punch'being about A very effected by this mechanism, since the movement comes to a gradual stop regardless of the original velocity. In the beginnin the line fromthe shaft 8 to the pin t is near ly at right-angles to the link u, and the toggle 0 is in its most bent position, so that from eac of these there results a high speed. In the mately true for the toggles.

The further movement of the toggles to 35 the position of Fig.4 and back again to that ated by said link it of Fig. 3 (with the link Z on the opposite side of the axis of the shaft T) merely swings the toggles to the positionin which they are slightly beyond their straight-line relation and swings the pin t so slightly beyond its ongitudinal movement of the link a or of the bed of the machine. Durin this stand-still of the lower bed the cam bears with its concentric portion upon the outer punch so that the latter also stands still; while the crank f moves the inner punch downward through its full stroke and commences its lifting movement.

What I claim is 1 1. A press including a movable member and mechanism for moving the same, said mechanism includin a toggleand a crank speed.

2. A'press including a movable member and mechanism, for moving the same, said mechanism includin a toggle and a crank arm actuated by sai toggle at a diminishing isipeed, and a second cran arm linked to the rst and actuated thereby at a diminishing speed.

. 3.- A press including a movable member and mechanismfor moving the same, said mechanism includ' a toggle and a'crank arm actuated by 8 .3% togg e, said toggle being substantially straight at the end of an actuating movement.

and mechanism for moving the same, said mechanism including a to gle and a crank arm actuated by sai togg c, said toggle bee ing substantially straight at the end of an actuating movement, and asecond crank arm linked to the first and actuated thereby, the link being adapted to extend approximatelyacross the axis of the first arm at the end of an actuating movement.

and a toggle mechanism for moving the same, said mechanism including toggle links 0 and 1), an operating link Z connected thereto, a crank pin 72. connected to said link l and means'including a crank arranged to transmit the motion of said toggle mechanism at t; diminishing speed to said movable mem- 6. A press including a movable member and a toggle mechanism for movin the same, said mechanism including a cran pin t, toggles. for swinging said pin-t, a link a connected to said pin t, and a-second arm operable member. I

7.- Aipress' includinga pair ofmovable members, a shaft, means for trans'mitti .the action of said shaft" to oneyof said'mem ere,

said mechanism including a toggle. arid-1a osition of rest or center as to effect no.

5. A press including a movable member.

arm actuated by sai toggle at a diminishing 4. A press including a movable member and operating the movand togg-1e mechanismfor transmitting the action of said shaft to the other member,,.

crank arm actuatedcby'said toggle at a disaid mechanism including a toggle and a cran k arm actuated by said toggle at a diminlshing speed, and a second crank arm linked to the first'an'd actuatedthereby at a diminishing speed.

9. A press including a pair of movable members, a shaft, means for transmitting the action of said shaft to one of said members, and toggle mechanism for transmitting the action of said shaft to the other member, said mechanism including a toggle and a crank arm actuated by said toggle at a diminishin speed, and an operating link for said togg e connected to a crank pin rotated by said shaft and at such an angle as to secure a minimum movement of said link as the toggle stands approximately straight.

10. A press including a pair of movable members, a shaft, means for transmitting the action of said shaft to one of said members, and toggle mechanism for transmitting the action of said shaft to the other member, said mechanism including a toggle and a crank arm actuated by said toggle at a diminishing speed, a second crank arm linked to the rst and actuated thereby at a diminishin speed, and an operating link for said togg e connected to a crank pin rotated by said shaft and at suchan angle as to secure a minimum movement of said link as the toggle stands approximately straight.

11. A press including, in combination, an

outer punch, an inner punch, a shaft carrying a crank operating said inner punch.and a cam operating said outer punch, a blank-holder and cutter having a movable member, and a toggle mechanism for'operating said member with a' quick initial movement and. a slow final cutting and clamping movement 12. A press including, in combination, an outer punch, an inner punch, a shaft carrying a crank operating said' inner punch and a cam operating said outer punch, a blank-holder and cutter having a movable member, and a wit 1 a quick initial movement and a slow .final cutting and clamping movement, said toggle mechanism for operating said member a crank arm actuated by said toggle at a diminishing speed.

13. A press including, in combination, an outer punch, an inner punch, a shaft carrying a crank operating said inner punch and a cam operating said outer punch, a blank-holder and' cutter having a movable membelyand a toggle mechanism for operating said member with a quick initial movement and a slow final cutting and clamping movement, said toggle mechanism including a toggle and a crank arm actuated by said togg e at a diminishingspeed, and a second crank arm linked to the first and actuated thereby at a diminishing speed. N

14.' A press including, in combination, an outer punch, an inner punch, a shaft carrying a crank operating said inner punch and a cam operating said outer punch, a blank-holder and cutter having a movable member, a tog le mechanism for operating said member with a quick initial movement and a slow final cutting and clamping movement, said toggle mechanism including a to gle and a crank arm actuated by said togg e ata diminishingspeed, and an operating link for said toggle connected to a crank pin rotated by said shaft and at such an angle as to secure a minimum movement of said link as the toggle stands approximately straight.

15. 1 A press including, in combination, an outer punch, an inner punch, a shaft carrying a crank operating said inner punch and a cam operating said outer punch, a blank-holder and cutter having a movable member, a toggle mechanism for operating said member with a quick initial movement and a slow final cutting and clamping movement, said toggle mechanism includin a to gle and a crank pin actuated by said toggle ata diminishing speed, a second crank arm linked to the first and actuated thereby at a diminishingspeed, and an operating link for said toggle connected to a crank pin rotated by said shaft and at such an angle as to secure a minimum movement of san] link as the toggle stands approximately straight.

In Witness whereof, I have hereunto,

signed my name in the presence of two subscribing witnesses.

WILLIAM KLOCKE.

Witnesses:

DOMINGO A. Usm, THEODORE T. SNELL. 

